The UCS C240 M5 SFF server extends the capabilities of Cisco’s Unified Computing System portfolio in a 2U form factor with the 2nd Generation Intel® Xeon® Scalable Processors, 3200 MHz DDR4 memory, and the new 512GB Intel® Optane™ Persistent Memory Modules (PMem). With this combination of features, up to 9 TB of memory is possible (using 12 x 256 GB DDR4 DIMMs and 12 x 512 GB PMem), up to 6 PCI Express (PCIe) 3.0 slots, and up to 26 internal SFF drives. The C240 M5 SFF server also includes one dedicated internal slot for a 12G SAS storage controller card.
The C240 M5 server includes a dedicated internal modular LAN on motherboard (mLOM) connector for installation of a Cisco Virtual Interface Card (VIC) or third-party network interface card (NIC), without consuming a PCI slot, in addition to 2 x 10Gbase-T Intel x550 embedded (on the motherboard) LOM ports.
The Cisco UCS C240 M5 server can be used standalone, or as part of the Cisco Unified Computing System, which unifies computing, networking, management, virtualization, and storage access into a single integrated architecture enabling end-to-end server visibility, management, and control in both bare metal and virtualized environments.
SFF drives, with 24-drive backplane, NVMe-optimized.

• Front-loading drive bays 1—8 support 2.5-inch NVMe PCIe SSDs only.
• Front-loading drive bays 9—24 support 2.5-inch SAS/SATA drives.
• The two rear-loading drive bays support up to two 2.5-inch NVMe SSDs only.
• No CPU, memory, drives, PCIe cards, or power supply included

Notes:
The C240 M5 SFF server hard drive backplane is not field upgradeable. This means, for example, that you cannot “upgrade” from the 8-drive backplane version to the 24-drive backplane version. Likewise, the backplane is not field “downgradeable.”

UCSC-C240-M5SN Chassis Does not include power supply, CPU, memory (DIMMs or PMem), hard disk drives (HDDs), solid-state drives (SSDs), NVMe drives, SD cards, riser 1, riser 2, tool-less rail kit, or PCIe cards.